PLATE 23 
EXPLANATION OF FIGURES 
82 Transection slightly caudal to the level shown in fig. 80. Weigert method. 
elie 
83 Transection through the rostral end of the nucleus rotundus. Weigert 
method. X 17. Shows particularly the connections between the fasciculus later- 
alis hemisphaerii and the nuclei prerotundus, rotundus and diffusus lobi lateralis. 
a, (see fig. 76); corp. gen. lat., corpus geniculatum laterale; com. horiz., commissura 
horizontalis; com. post., commissura posterior; com. trans., commissura transversa; 
fase. retr., fasciculus retroflexus; fib. ans., fibrae ansulatae; fib. tect. n. opt., fibrae 
tectales nervi optici; hyp. hypophysis; lob. inf., lobus inferior; nucl. ant. thal., 
nucleus anterior thalami; nucl. ant. twb., nucleus anterior tuberis; nucl. lat. tub., 
nucleus lateralis tuberis; nucl. prerot., nucleus prerotundus; nucl. rot., nucleus 
rotundus; nucl. vent. tuwb., nucleus ventralis tuberis; tr. cbl. tect. + com. horiz., 
tractus cerebello-tectalis plus the commissura horizontalis; tr. hab. dien.——, 
tractus habenulo-diencephalicus; tr. hyp. olf. med., tractus hypothalamo-olfac- 
torius medialis; ér. olf. hyp. lat. + tr. strio-thal. cruc., tractus olfacto-hypothalami- 
cus lateralis plus the tractus strio-thalamicus cruciatus; tr. olf. thal. med., pars 
dors., tractus olfacto-thalamicus medialis, pars dorsalis; tr. olf. thal. med., pars 
intermed.<——>, tractus olfacto-thalamicus medialis, pars intermedia; (r. olf. thal. 
med., pars vent., tractus olfacto-thalamicus medialis, pars ventralis; tr. opt., 
tractus opticus; tr. praeth. cin., tractus praethalamo-cinereus; tr. rot. lent., trac- 
tus rotundo-lentiformis (Kappers); tr. strio-thal. incruc.<-—, tractus strio- 
thalamicus incruciatus; shows particularly the fibers innervating the nucleus 
diffusus lobi lateralis; tr. thal. mam., tractus thalamo-mammillaris (Goldstein) ; 
tr. thal. sp., tractus thalamo-spinalis (Kappers); tr. tub. dors.,tractus tubero-dor- 
salis. 
300 
